TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Applications
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3G / 4G Wireless Infrastructure
CDMA, TD-CDMA, WCDMA, LTE
Repeaters
PTP Radio IF Chains
28-pin 6x6mm leadless SMT package
Product Features
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Functional Block Diagram
1.4-2.7 GHz Frequency Range
31.7 dB Maximum Gain at 2 GHz
31.5 dB Gain Range in 0.5 dB Steps
+43 dBm Output IP3
+24.5 dBm Output P1dB
1.5 dB Noise Figure at Max. Gain State
Fully Internally Matched Module
Integrated Blocking Capacitors, Bias Inductors
3-wire SPI Control Programming
General Description
Pin Configuration
The TQM879006A is a digital variable gain amplifier
(DVGA) featuring high linearity over the entire gain
control range.
The amplifier module features the
integration of a low noise amplifier gain block, a digitalstep attenuator (DSA), along with a high linearity ¼W
amplifier. The module has the added features of
integrating all matching components with bias chokes
and blocking capacitors. The internal DSA offers 0.5 dB
step, 6-bit, and 31.5 dB range and is controlled with a
TM
serial periphery interface (SPI ).
The TQM879006A features variable gain from 0 dB to
31.7 dB at 2 GHz, has +43 dBm Output IP3, and +24.5
dBm P1dB. The amplifier also has a very low 1.5 dB
Noise Figure (at maximum gain) allowing it to be an ideal
DVGA for both receiver and transmitter applications.
The amplifier operates from a single +5V supply and is
available in a compact 28-pin 6x6 mm leadless SMT
package.
The TQM879006A is pin compatible with the
TQM829007 (0.6-1GHz, 0.25W DVGA) and TQM879008
(1.5-2.7 GHz, 0.5W DVGA). This allows one to size the
right type of device for specific system level
requirements as well as making the DVGA family ideal
for applications where a common PCB layout is used for
different frequency bands.
Datasheet: Rev R 11-15-13
© 2013 TriQuint
Pin No.
1
2
3
4, 22
6
8
14
16
28
All Other Pins
Symbol
LE
DATA
CLK
NC
RFIN
VCC_AMP1
VCC_AMP2
RFOUT
VCC_SPI
GND
Ordering Information
Part No.
Description
TQM879006A-PCB
Fully Assembled Evaluation Board
Includes USB control board (EVH)
TQM879006A
1.4−2.7 GHz Digital Variable Gain Amp
Standard T/R size = 2500 pieces on a 13” reel.
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TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Absolute Maximum Ratings
Recommended Operating Conditions
Parameter
Parameter
Storage Temperature
RF Input Power,CW, 50Ω,T = 25°C
Vcc (pins 8, 14, 28)
Digital Input Voltage
Rating
-55 to 150 °C
+23 dBm
+5.5 V
Vcc+ 0.5V
Device Voltage (VCC)
Case Temperature
6
Tj for >10 hours MTTF
Min
+4.75
-40
Typ
+5.0
Max Units
+5.25
+85
+170
V
°C
°C
Electrical specifications are measured at specified test
conditions. Specifications are not guaranteed over all
recommended operating conditions.
Operation of this device outside the parameter ranges
given above may cause permanent damage.
Electrical Specifications
Test conditions unless otherwise noted: VCC=+5 V, Temp= +25°C, Maximum Gain State
Parameter
Operational Frequency Range
Test Frequency
Gain
Gain Control Range
Conditions
Min
1400
0.5 dB Step Size
Attenuation Accuracy
3 wire SPI, Major State
Control Interface
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
Noise Figure
I/O Impedance
Supply Voltage
Supply Current
Thermal Resistance, θjc
3-wire SPI
Datasheet: Rev R 11-15-13
© 2013 TriQuint
Pout=+11 dBm/tone, Δf=1 MHz
Module (junction to case)
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Typ
Max
2700
2000
27.5
31.7
34
31.5
±(0.3+5% of Attenuation setting)
Max
6
21
20
+24.5
+38
+43.0
1.5
50
+5
174
215
36.7
Units
MHz
MHz
dB
dB
dB
Bit
dB
dB
dBm
dBm
dB
Ohm
V
mA
°C/W
Disclaimer: Subject to change without notice
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TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
J3-20
GND
J3-18
Vcc_AM
J3-19
P
J3-17
J3-16
J3-15
J3-14
J3-13
LE
J3-12
J3-11
DATA
CLK
J3-10
J3-8
J3-9
J3-6
J3-7
J3-5
J3-4
J3-3
J3-2
GND
SPI_Vcc
J3-1
Application Circuit (TQM879006A-PCB)
SPI_LE
GND
SPI_DATA
GND
SPI_CLK
GND
GND
GND
RF_IN
GND
GND
GND
GND
GND
GND
GND
0Ω
J2
RF
Output
C13
C12
4.7uF
C2
0Ω
RF_OUT
Vcc_AMP
2
C1
Vcc_AMP1
RF
Input
GND
U1
6X6_ 28PIN
NC
J1
NC
GND
GND
GND
GND
SPI_Vcc
0.1uF
GND
C8
FB1
FB2
0Ω
0Ω
4.7uF
Notes:
1. For PCB Board Layout, see page 9 for more information.
2. All Components are of 0603 size unless stated otherwise.
3. For SPI Timing Diagram, see page 6.
4. 0 Ω jumpers may be replaced with copper traces in the target application layout.
5. Different ground pins are used for SPI (digital) and analog supply voltages.
6. The primary RF microstrip characteristic line impedance is 50 Ω.
7. The single power supply is used to provide supply voltage to AMP1 and AMP2.
Bill of Material − TQM879006A-PCB
Reference Des.
Value
Description
1.5-2.7 GHz ¼ W DVGA
TriQuint
C8
0.1 uF
Cap, Chip, 0603, 16V, X7R, 10%
various
C12, C13
4.7 uF
Cap, Chip, 0603, 6.3V, X5R, 20%
various
Res, Chip, 0603, 1/16W, 5%
various
U1
n/a
C1, C2, FB1, FB2
0Ω
C4
DNP
Datasheet: Rev R 11-15-13
© 2013 TriQuint
- 3 of 11 -
Manuf.
Part Number
TQM879006A
Disclaimer: Subject to change without notice
www.triquint.com
TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Typical Performance , Maximum Gain State
Test conditions unless otherwise noted: VCC=+5 V, ICC=174 mA (typ), Temp=+25°C
Parameter
Frequency
Gain
Input Return Loss
1500
30.8
13
1800
31.4
25
Output Return Loss
Output P1dB
Output IP3 (11 dBm/tone, ∆f = 1 MHz)
Noise Figure
10
+24.1
+40.2
1.35
15
+24.5
+42.0
1.4
Typical Value
2000
31.7
21
2140
31.7
17
2350
31.6
18
2600
30.8
19
20
+24.5
+43.0
1.5
19.5
+24.5
+43.0
1.5
15
+24.4
+41.0
1.6
11
+24.3
+40.5
1.8
Units
MHz
dB
dB
dB
dBm
dBm
dB
Notes:
1. The evaluation board can be used with TriQuint’s USB interface board. Refer to TriQuint’s website for more information.
Typical Performance Plots
S11 vs. Freq over Attenuation States
0
S11 (dB)
-5
0dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.5dB
-10
-15
-20
-25
Temp. = 25oC
-30
1.3
1.5
1.7
1.9
2.1
2.3
2.5
2.7
Frequency (GHz)
Datasheet: Rev R 11-15-13
© 2013 TriQuint
- 4 of 11 -
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TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Typical Performance Plots
S22 vs. Freq over Attenuation States
0
Temp. = 25oC
S22 (dB)
-5
-10
-15
-20
-25
0dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.5dB
-30
1.3
1.5
1.7
1.9
2.1
2.3
2.5
2.7
Frequency (GHz)
Attenuation Accuracy vs. Attenuation
Attenuation Accuracy (dB)
2.0
Vdd = 5 V , Temp. = 25oC
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
1.8GHz
1.9GHz
2.0GHz
2.4GHz
2.7 GHz
-2.0
0
Datasheet: Rev R 11-15-13
© 2013 TriQuint
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5
10
15
Attenuation (dB)
20
25
30
Disclaimer: Subject to change without notice
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TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Serial Control Interface
Serial Control Timing Characteristics
Parameter
(Test conditions: VCC = +5 V, TLEAD=25°C)
Condition
Clock Frequency
LE Setup Time, tLESUP
LE Pulse Width, tLEPW
DATA set-up time, tSDSUP
DATA hold-time, tSDHLD
LE Pulse Spacing tLE
Propagation Delay tPLO
Min
50% Duty Cycle
after last CLK rising edge
Parameter
30
Min
0
Input High Voltage, VIH
Input Current, IIH / IIL
On DATA, LE and CLK
DATA (MSB in First 6-Bit Word) Control Logic Truth Table
MSB
6-Bit Control Word to DSA
Units
MHz
ns
ns
ns
ns
ns
ns
(Test conditions: VCC = +5 V, TLEAD=25°C)
Condition
Input Low Voltage, VIL
10
10
30
10
10
630
before CLK rising edge
after CLK rising edge
LE to LE pulse spacing
LE to Parallel output valid
Serial Control DC Logic Characteristics
Max
LSB
Max
0.8
Units
V
2.4
Vcc
V
-10
+10
µA
Gain Relative to Maximum Gain
D5
D4
D3
D2
D1
D0
Reference : IL
1
1
1
1
1
1
0 dB
1
1
1
1
1
0
0.5 dB
1
1
1
1
0
1
1 dB
1
1
1
0
1
1
2 dB
1
1
0
1
1
1
4 dB
1
0
1
1
1
1
8 dB
0
1
1
1
1
1
16 dB
0
0
0
0
0
0
31.5 dB
Any combination of the possible 64 states will provide a reduction in gain of approximately the sum of the bits selected.
Serial Control Interface Timing Diagram
CLK is disabled when LE is high
D5-D0
MSB-LSB
D5-D0
MSB-LSB
LE
tPLO
CLK
DATA
SERIN
tSDSUP
Datasheet: Rev R 11-15-13
© 2013 TriQuint
tLESUP
tSDHLD
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tLEPW
Disclaimer: Subject to change without notice
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TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Detailed Device Description
The TQM879006A is a 50 Ω internally matched digital variable gain amplifier (DVGA) featuring high linearity over the
entire gain control range. The amplifier module features the integration of a low noise amplifier gain block, a digital
step attenuator (DSA), along with a high linearity ¼W amplifier as shown in the functional diagram below. The
module is unconditionally stable. Internal blocking capacitors and bias structures keep external parts count to a
minimum. The DVGA has an operational frequency range from 1.4 - 2.7 GHz.
Functional Schematic Diagram
DC Block
DC Block
DSA
AMP1
Pin 6
DC Block
M
AMP2
SPI
DC Bias
Pin 8
DC Block
Pin 1
LE
Pin 16
M
DC Bias
Pin 2
Pin 3
DATA
CLK
Pin 14
Where M = Matching Network.
Chain Analysis Table
This table provides the typical performance of individual stages in the module as well as overall module performance.
Parameter
Gain
NF
OIP3
P1dB
Icc
Datasheet: Rev R 11-15-13
© 2013 TriQuint
AMP1
DSA
AMP2
Overall Module
Units
85
2.0
87
174
mA
19
1.3
36
20
-1.8
1.8
55
28.5
14.5
4.0
43
24.5
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31.7
1.5
43
24.5
dB
dB
dBm
dBm
Disclaimer: Subject to change without notice
www.triquint.com
TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Device Detailed Description
AMP1
AMP1 is a wide band low noise amplifier gain block in DVGA module. The amplifier provides 19 dB gain, 1.3 dB noise
figure, +36 dBm OIP3 at 2.0 GHz while only drawing 85 mA current. External DC blocks and biasing is not required.
AMP1 is DC blocked internally and is connected internally to three bypass capacitors (22 pF, 100 pF, 0.01 uF)
followed by 22 nH inductor inside the module as shown in the figure below.
Pin 8
0.1 uF
100 pF
AMP1
68 nH
Pin 6
DC Block
DC Block
To DSA
(internal)
DSA (Digital Step Attenuator)
TM
DVGA has a serial digital step attenuator that is controlled with 6-bit serial periphery interface (SPI ) and has 0.5 dB
step size with 31.5 dB attenuation range. This 50-ohm RF DSA maintains high attenuation accuracy over frequency
and temperature.
“000000” represents maximum attenuation state. External bypass capacitors are needed to
compensate the inductance effect associated with long transmission lines on the evaluation board.
AMP2
AMP2 is high linearity ¼-W amplifier in DVGA module. The amplifier provides 14.4 dB gain, +24.5 dBm P1dB, +43
dBm OIP3 at 2.0 GHz while only drawing 87 mA current. The amplifier is optimized over 1.4 – 2.7 GHz bandwidth
using internal matching components. AMP2 is DC blocked internally and is connected internally to two bypass
capacitors (22 pF, 0.01 uF) followed by an 18 nH inductor inside the module as shown in the figure below. External
DC blocks and biasing is not required.
Pin 14
0.01 uF
22 pF
AMP2
18 nH
From DSA
(internal)
M
M
DC Block
DC Block
Datasheet: Rev R 11-15-13
© 2013 TriQuint
Pin 16
- 8 of 11 -
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TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Pin Configuration and Description
Pin No.
Symbol
Description
1
LE
Serial Latch Enable Input. When LE is high, latch is clear and content of SPI control the
attenuator. When LE is low, data in SPI is latched.
2
DATA
Serial data input. The data and clock pins allow the data to be entered serially into SPI
and is independent of Latch state.
3
CLK
Serial clock input.
4, 22
N/C
No internal connection. connect or open. This pin is not connected in this module
6
RFIN
Input, matched to 50 ohms between 1800 and 2700 MHz. Internally DC blocked.
8
VCC_AMP1
Supply Voltage to AMP1. This pin is connected internally to 3 bypass capacitors (22pF,
100 pF, 0.01uF) followed by a 22 nH inductor inside the module.
14
VCC_AMP2
Supply Voltage to AMP2. This pin is connected internally to 2 bypass capacitors (22pF,
0.01uF) followed by an 18 nH inductor inside the module.
16
RFOUT
Output, matched to 50 ohms between 1800 and 2700 MHz. Internally DC blocked.
28
VCC_SPI
Supply voltage for SPI and DSA chip. This pin is connected to 0.1uF bypass capacitor
internally.
All other Pins
GND
RF/DC Ground Connection
Evaluation Board PCB Information
TriQuint PCB 1080956 Material and Stack-up
50 ohm line dimensions: width = .030”, spacing = .036”
Datasheet: Rev R 11-15-13
© 2013 TriQuint
- 9 of 11 -
Disclaimer: Subject to change without notice
www.triquint.com
TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Package Marking and Dimensions
Marking: Part number – TQM879006A
Lot Code – YYWW CCCC
Vendor Code and Triquint Lot Number - AaXXXX
TQM879006A
Notes:
1. All dimensions are in millimeters. Angles are in degrees.
2. Except where noted, this part outline conforms to JEDEC standard MO-220, Issue E (Variation VGGC) for thermally enhanced
plastic very thin fine pitch quad flat no lead package (QFN).
3. Dimension and tolerance formats conform to ASME Y14.4M-1994.
4. The terminal #1 identifier and terminal numbering conform to JESD 95-1 SPP-012.
PCB Mounting Pattern
Notes:
1. All dimensions are in millimeters. Angles are in degrees.
2. Use 1 oz. copper minimum for top and bottom layer metal.
3. Vias are required under the backside paddle of this device for proper RF/DC grounding and thermal dissipation. We
recommend a 0.35mm (#80/.0135") diameter bit for drilling via holes and a final plated thru diameter of 0.25 mm (0.10”).
4. Ensure good package backside paddle solder attach for reliable operation and best electrical performance.
Datasheet: Rev R 11-15-13
© 2013 TriQuint
- 10 of 11 -
Disclaimer: Subject to change without notice
www.triquint.com
TQM879006A
1.4 −2.7 GHz ¼ W Digital Variable Amplifier
Product Compliance Information
ESD Sensitivity Ratings
Solderability
Compatible with both lead-free (260°C maximum reflow
temperature) and tin/lead (245°C maximum reflow
temperature) soldering processes.
Caution! ESD-Sensitive Device
Contact plating: Electrolytic Plated Au over Ni
ESD Rating:
Value:
Test:
Standard:
Class 1A
Passes ≥ 250 V to < 500 V
Human Body Model (HBM)
JEDEC Standard JESD22-A114
ESD Rating:
Value:
Test:
Standard:
Class IV
Passes ≥ 1000 V
Charged Device Model (CDM)
JEDEC Standard JESD22-C101
RoHs Compliance
This part is compliant with EU 2002/95/EC RoHS
directive (Restrictions on the Use of Certain Hazardous
Substances in Electrical and Electronic Equipment).
MSL Rating
MSL Rating: Level 3
Test:
260°C convection reflow
Standard:
JEDEC Standard IPC/JEDEC J-STD-020
This product also has the following attributes:
• Halogen Free (Chlorine, Bromine)
• Antimony Free
• TBBP-A (C15H12Br402) Free
• PFOS Free
• SVHC Free
Contact Information
For the latest specifications, additional product information, worldwide sales and distribution locations, and information
about TriQuint:
Web: www.triquint.com
Email: info-sales@triquint.com
Tel:
Fax:
+1.503.615.9000
+1.503.615.8902
For technical questions and application information:
Email: sjcapplications.engineering@triquint.com
Important Notice
The information contained herein is believed to be reliable. TriQuint makes no warranties regarding the information
contained herein. TriQuint assumes no responsibility or liability whatsoever for any of the information contained
herein. TriQuint assumes no responsibility or liability whatsoever for the use of the information contained herein. The
information contained herein is provided "AS IS, WHERE IS" and with all faults, and the entire risk associated with
such information is entirely with the user. All information contained herein is subject to change without notice.
Customers should obtain and verify the latest relevant information before placing orders for TriQuint products. The
information contained herein or any use of such information does not grant, explicitly or implicitly, to any party any
patent rights, licenses, or any other intellectual property rights, whether with regard to such information itself or
anything described by such information.
TriQuint products are not warranted or authorized for use as critical components in medical, life-saving, or lifesustaining applications, or other applications where a failure would reasonably be expected to cause severe personal
injury or death.
Datasheet: Rev R 11-15-13
© 2013 TriQuint
- 11 of 11 -
Disclaimer: Subject to change without notice
www.triquint.com